保存base64格式的图片到本地并返会路径.txt

function save_img_by_base($base64_image_content){
	header('Content-type:text/html;charset=utf-8');
	//保存base64字符串为图片
	if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $base64_image_content, $result)){
		$type = $result[2];//匹配出图片的格式
		$root_path= dirname(ROOT_PATH)."/images/cardarticleimg/"; //图片保存的路径
		$path=date('Y-m-d').'/';
		$mulu=$root_path.$path;
		if(!file_exists($mulu)){
			mkdir($mulu,0777,true);
			chmod($mulu,0777);
		}
		$file_name = mt_rand().".$type";
		$new_file=$mulu.$file_name;
		/*$new_file = "./test.{$type}";*/
		if (file_put_contents("$new_file", base64_decode(str_replace($result[1], '', $base64_image_content)))){
			return $path.$file_name;
		}
	}
}